Proposition

заявле́ние

zajavlénije

(math: assertion which can be considered true or false)

предложе́ние

predložénije

(uncountable: act of offering for consideration)

предложе́ние

predložénije

(idea or plan offered)

проект

projekt

(in the US: proposed statute or constitutional amendment)

утвержде́ние

utverždénije

(uncountable: act of offering for consideration)

утвержде́ние

utverždénije

(an assertion which is provably true, but not important enough to be a theorem)